+1 vote
in Machine Kinematics by (38.0k points)
A stone is projected horizontally from a cliff at 10 m/sec and lands on the ground below at 20 m from the base of the cliff. Find the height of the cliff.

(a) 18 m

(b) 20 m

(c) 22 m

(d) 24 m

The question was posed to me by my college director while I was bunking the class.

Question is from Coefficient of Friction topic in section Friction of Machine Kinematics

1 Answer

0 votes
by (106k points)
Right choice is (b) 20 m

Best explanation: h = 1/2at^2

h = 1/2 x 10 x 4 = 20m.

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